英语翻译In all metal uptake experiments,DCFs increased linearly over time for all three metals (Figs 1 and 2).Cells maintained at a higher nitrate concentration grew faster than those maintained without nitrate additions,indicating that the cells

英语翻译In all metal uptake experiments,DCFs increased linearly over time for all three metals (Figs 1 and 2).Cells maintained at a higher nitrate concentration grew faster than those maintained without nitrate additions,indicating that the cells
英语翻译
In all metal uptake experiments,DCFs increased linearly over time for all three metals (Figs 1 and 2).Cells maintained at a higher nitrate concentration grew faster than those maintained without nitrate additions,indicating that the cells were under N-limited conditions.N addition appeared to have greatly a.ected the uptake of Cd and Zn (Fig.1).For example,the DCF increased by 1.8± 2.5_ for Cd with the addition of 176 mM N after 5 h of exposure compared with DCF measured without N addition.For Zn,the DCF increased by 1.5±2_ with an addition of 176 mM N at the two low Si concentrations (without Si addition,and 7.2 mM addition).The degree to which Cd and Zn DCFs were affcted by N additions was similar at the two low Si concentrations.At a high Si concentration (82.9 mM addition),however,N addition had a less in¯uence on metal uptake.In contrast to N and Si,no major difference in cell growth rate and metal uptake was found for diatom cells maintained at different P concentrations (Fig.2).Se DCF in the diatoms was not a.ected by N and P concentrations,but was significantly reduced with an increase in Si concentration (P

英语翻译In all metal uptake experiments,DCFs increased linearly over time for all three metals (Figs 1 and 2).Cells maintained at a higher nitrate concentration grew faster than those maintained without nitrate additions,indicating that the cells
在所有金属的吸收实验, DCFs线性增加在一段时间内的所有三种金属（图1和2 ） .细胞保持在一个较高的硝酸盐浓度的增长快于那些维持硝酸盐增加,这表明细胞受到氮限制条件. ñ此外似乎已大大a.ected吸收镉,锌（图1 ） .例如, DCF法增加了1.8 ± 2.5_镉,增加了176毫米ñ后5 h的接触与DCF法测量不加N此外.锌的DCF法增加了1.5 ± 2_与增加了176毫米ñ两个低硅浓度（无硅此外,除了和7.2毫米） .在何种程度上镉和锌DCFs被affcted由N增加类似在两个低硅的浓度.在高硅浓度（ 82.9毫米此外） ,然而,氮除了有少¯ uence对金属的吸收.与此相反,以氮,硅,没有发生重大差异,细胞生长率和金属的吸收被发现的硅藻细胞保持在不同P浓度（图2 ） .硒DCF法在硅藻没有a.ected的氮和磷的浓度,但明显降低而增加,在硅浓度（ P “ 0.001 ,一个因素方差分析,图. 1 ） .例如,计算折现率为2.1 ± 2.5_下跌增加了82.9毫米的硅硅相比,除了没有.由于吸收的镉,硒和锌在一段时间内基本上是一个线性的特点规律,作者计算的斜坡之间的线性回归的DCF法和时间的接触,这是相对金属的吸收率,涉及金属化（王和上帝,印刷中） .在这项研究中,作者没有监测稳定或自由金属离子浓度,从而绝对金属的吸收率无法计算.然而,相对金属的吸收率的基础上衡量DCF法应随着时间的推移比例的绝对速度金属吸收. Therelative吸收镉增加了1.9 ± 2.5_与增加了176毫米ñ在三个不同的硅处理.相对摄取锌增加了1.7 ± 2.3_在两个低硅处理（无硅此外,除了和7.2毫米） ,但仍维持在较高的硅含量（ 82.9毫米此外） .